Uterine malformation 1, the beginning of the uterus: the uterus is very small, about 1-3, no uterine cavity, often combined with the absence of a vagina, infertile. 2.Uterine dysplasia (infantile uterus): the uterus is smaller than normal, the ratio of the uterus to the cervix is 1:1 or 2:3, and the uterus can be treated with estrogen and progesterone before puberty so that the uterus develops to normal. 3.Double uterus: each uterus has a single fallopian tube and ovary, often accompanied by double cervix and double vagina, there are also double cervix, single vagina or vaginal mediastinum. Duplex uterus can generally be normal pregnancy. During labor, the non-pregnant uterus may obstruct the descent of the baby, and occasionally both uteruses may become pregnant at the same time. Surgical treatment is feasible for those with vaginal mediastinum that affects sexual intercourse. 4, bicornuate uterus and saddle uterus: bicornuate uterus is prone to abnormal fetal position, bicornuate uterus with repeated miscarriages or hysteroscopic examination of the abnormalities of hysteroplasty, saddle uterus does not affect the pregnancy in general. 5, septate uterus: divided into complete septum and incomplete septum, in order to occur infertility, miscarriage, preterm delivery and fetal position abnormalities, can be diagnosed by uterine tubal iodine oil angiography or hysteroscopy, infertility or recurrent miscarriages, the feasibility of hysteroscopic resection of the septum. Unicornuate uterus: only one side of the paramedian kidney tube develops to form unicornuate uterus, and the ovaries, fallopian tubes and kidneys on the undeveloped side are often absent at the same time, which makes it easy for miscarriage and preterm labor to occur. 7. Stumpy uterus: one side of the paramedian renal tube develops normally, while the other side is underdeveloped to form a stumpy uterus, which is easy to be misdiagnosed as ovarian tumor during examination. If the endometrium of the stump uterus has no function, no treatment is needed. If the endometrium has function and is not connected with the normal uterine cavity, dysmenorrhea and endometriosis may occur and surgical treatment is needed. If pregnancy occurs in the stump uterus, ectopic pregnancy symptoms may appear or it is not easy to scrape out during abortion, which should be treated by surgery in time. Endometrial polyps Endometrial polyps are focal hyperplasia of the endometrial glands, the cause of which is unknown, and is currently believed to be related to inflammatory stimulation or the lack of progesterone receptors in this part of the body and the relative enhancement of the role of estrogen. Polyps do not follow the menstrual endothelial stripping, local polyps or microscopic polyps generally do not affect the conception, but multiple polyps affect the endothelial metamorphosis, impede the conception of pregnant egg implantation and affect the conception of progesterone or anti-inflammatory treatment is ineffective when the feasibility of hysteroscopic polypectomy. Polyps in the uterine cavity at the mouth of the fallopian tube can cause proximal obstruction of the fallopian tube, and surgical resection is feasible.